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# topAnchor

A layout anchor representing the top edge of the layout guide’s frame.

```
var topAnchor: NSLayoutYAxisAnchor { get }
```

## Discussion

Use this anchor to create constraints with the layout guide’s top edge. You can combine this anchor only with other <doc://com.apple.documentation/documentation/UIKit/NSLayoutYAxisAnchor> anchors. For more information, see <doc://com.apple.documentation/documentation/UIKit/NSLayoutAnchor>.

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